Timeline for Understanding the PN-Junction Built in Voltage
Current License: CC BY-SA 3.0
9 events
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| Apr 13, 2017 at 12:32 | history | edited | CommunityBot |
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| Jun 9, 2014 at 18:04 | vote | accept | Xavier Hubbard Anderson | ||
| Jun 9, 2014 at 18:04 | vote | accept | Xavier Hubbard Anderson | ||
| Jun 9, 2014 at 18:04 | |||||
| Jun 6, 2014 at 1:09 | comment | added | Xavier Hubbard Anderson | I think the notes I read were correct and I just misunderstood them. So what I understand is that the Boltzmann relation idea is only used to find a potential due to doping when it is actually part of a PN junction. The reference voltage we used was ground and the ground reference concentration was the intrinsic concentration of the material. Is that correct? | |
| Jun 5, 2014 at 22:58 | comment | added | Alfred Centauri | @XavierHubbardAnderson, a doped semiconductor, whether n-type or p-type, should not have a built-in potential. Where did you read that? Do you have a link? | |
| Jun 5, 2014 at 22:50 | comment | added | Xavier Hubbard Anderson | And to follow up on the last point, we were shown a graph of the potentials for a PN-Junction with metal contacts in my microelectronics class. It said the contact potential was 0 on both sides meaning there was a near instantaneous drop between the semi-conductor and metal contact point. Doesn't that imply a "delta" or infinite electric field somewhere at the contact points? | |
| Jun 5, 2014 at 22:47 | comment | added | Xavier Hubbard Anderson | -Why ISN'T it the same as saying that? There is a potential difference between them, yet the universe views them as the same from outside the substance. -I don't mean in the PN junction, unless i've misunderstood what that equation tells us, which I've been thinking might be the case. I meant a single doped bit of semi-conductor. It doesn't make sense to me that it has a potential, so I suppose it doesn't. | |
| Jun 5, 2014 at 22:24 | history | edited | Alfred Centauri | CC BY-SA 3.0 |
added 96 characters in body
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| Jun 5, 2014 at 22:19 | history | answered | Alfred Centauri | CC BY-SA 3.0 |